Skip to content
Toolyard
PDF
Image
Video & Audio
Units
Calculators
Text
Timers & Random
Device Tests
Games
Sequences
Chemistry
Biology
Finance
Engineering
Developer
Simulations
Guides
Descriptive statistics: Introductory Statistics Free Practice Problems & Quiz Questions
All topics
Statistics for biology
Descriptive statistics
Probability and distributions
Confidence intervals
What is the mean of the data set 25, 3, 23, 30, 15, 9?
15
17.5
21
23
Next question
Start a practice exam (10 questions)